<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>借助JavaScript访问HTML元素</title>
</head>
<body>	
<div id="app">
  <p id="demo"></p>
</div>
<script>
  var message='Hello Vue';
  document.getElementById("demo").innerHTML=message;
</script>
</body>
</html>
